Hi, this is a strange one...i bought a new trailer lighting board on ebay. Issue i have is that the standard red wire should be the brake light wire.....its not though its the blue wire. Strange...the indicators and side light work but the wiring is a mare. Whats the focus mk1 saloon rear brake light colour?

 

Has the trailer board been wired incorrectly you mean?

Be easier for you to check which wire comes live on the stop lamp.

Not sure of colour without checking wiring diagrams..